Answer:
A. About 4,900 ft
Step-by-step explanation:
We want h such that ...
5 = 10·ln(h) -80
8.5 = ln(h) . . . . . . . add 80, divide by 10
e^8.5 = h ≈ 4914.8 . . . . take the antilog
h ≈ 4900 . . . . feet
The sum of 45% of a number and 55% of the same number is 200. what is the number?
1 answer:
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Answer:
see explanation
Step-by-step explanation:
(a)
= 1 ( any value divided by itself = 1 )
(b)
= a ( any value divide by 1 is the value itself )
(c)
×
=
The product of 2 fractions is the product of the numerators divided by the product of the denominators
(d)
÷
=
To divide 2 fractions, leave the first fraction, change division to multiplication and turn the second fraction upside down, that is
÷
=
×
=
(e)
+
=
Since the fractions have a like denominator, add the numerators leaving the denominator. This applies to subtraction also
(f)
-
=
See explanation for part (e)